Improvement in curtain-fixtures



H'. H. BunmTT.

Curtain-Fixtures.

No, 145,785. Paientednec. 23,1873,

UNITED STATES PATENT FFICE.

HARVEY H. BURRITT, OF BELLEVILLE, NEW JERSEY.

IMPROVEMENT IN CURTAIN-FIXTURES.

Specification forming part of Letters Patent No. 145,785, dated Drcemher 23,1873; application led October 25, 1873.

To all 'whom it may concjrfn:

Beit known that I, HARVEY H. BURRITT, of Belleville, in the county ofEssex and State of New Jersey, have invented an Improvement inCurtain-Fixtures, of which the following is a specification:

Curtain-rollers have been made with a spring to revolve the roller anddraw up the curtain, and a pawl has been employed to engage with thenotched stationary spindle; but the end of the pawl is liable to becomerounding and not to hold, and the notched spindle has to stand in a Xedposition relative to the pawls when they fall, and so that thecentrifugal force can be availed of in throwing the pawls out of action.Balls have also been used between stops formed by blocks on the rollerends, or by notches in the spindle and stops upon the roller end. Myinvention is made for dispensing with a pawl, and for using acylindrical instead of a notched spindle. I employ, in

addition to the cylindrical spindle, a scroll' flange in the roller end,and a ball that is placed between the scroll-flange and cylindricalspindle, in such a manner that the centrifugal force throws the balloutwardly in the :oller end; but when the revolution of the 1-ller isarrested, the ball is allowed to fall between the spindle and scroll andblock the arts, so that the roller cannot revolve by the Q-tion of thespring until the curtain is drawn down suiciently to liberate the balland free the roller end from the clamping action upon the spindle.

In the drawing, Figure I is an elevation of the roller end and spindleas clamped by the ball; Fig. 2 is a similar view, with the ball out ofaction; and Fig. 3 represents the roller and parts by a longitudinalsection.

The roller a, spring b, and spindle c are of a character similar to thatbefore employed, except that the spindle is plain instead of bcingnotched. The spindle is inserted at the end of the wooden rod d, aroundwhich the spring is coiled, one end of that spring being attached to therod, the other end to the wooden roller a. The metallic roller end h ismade with a scroll-flange, 2, and -guard-iiange 3, and the ball t' isinserted between these and the spindle o, the spindle at this pointbeing cylindrical or slightly elliptical. The cap lis made to retain theball 'i in place, and also to serve as an outer bearing for the spindle.It is preferable to secure the metallic roller end h by the nails o, andto make the cap l of a separate disk, secured by an inward flange ot'the cylindrical cap that extends around the wooden portion of theroller. A short cylinder may be employed in place of the ball.

I claim as my invention- The curtain-lixture made with a roller end, anda frictional clamp interposed between the inner surface of the rollerend and the cylindrical or smooth spindle, substantially as set forth.

Signed by me this 22d day of October, A. D. 1573.

H. H.- BURRITT.

Witnesses:

GEO. T. PINCKNEY, CHAs. H. SMITH.

